main > section {
  margin-bottom: 4rem;
}
main > section h2 {
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
}

.past-section .show-grid:empty::after {
  content: "Nothing in the archive yet.";
  display: block;
  color: var(--muted);
  font-style: italic;
  padding: 1rem 0;
  grid-column: 1 / -1;
}

.site-nav ul a.active { color: var(--accent); }